2V0-622D · Question #238
An administrator is configuring vCenter HA and considering placing the Passive and Witness nodes in another datacenter from the Active Node. Which is the maximum supported latency between the vCenter
The correct answer is B. 10ms. VMware supports a maximum round-trip network latency of 10ms between all vCenter HA nodes, which applies even when Passive and Witness nodes are placed in a separate datacenter.
Question
An administrator is configuring vCenter HA and considering placing the Passive and Witness nodes in another datacenter from the Active Node. Which is the maximum supported latency between the vCenter HA nodes?
Options
- A5ms
- B10ms
- C100ms
- D30ms
- E50ms
How the community answered
(53 responses)- A4% (2)
- B94% (50)
- E2% (1)
Why each option
VMware supports a maximum round-trip network latency of 10ms between all vCenter HA nodes, which applies even when Passive and Witness nodes are placed in a separate datacenter.
5ms is below the actual supported maximum and is unnecessarily restrictive - VMware explicitly supports up to 10ms.
The vCenter HA architecture relies on continuous heartbeat and state replication between the Active, Passive, and Witness nodes; VMware's official requirement caps this at 10ms round-trip latency. Exceeding this threshold risks false failover triggers or split-brain conditions, making 10ms the hard upper boundary regardless of node placement across datacenters.
100ms far exceeds the supported 10ms maximum and would cause unreliable heartbeat detection and state replication failures.
30ms exceeds the 10ms supported maximum latency for vCenter HA node communication.
50ms exceeds the 10ms supported maximum latency for vCenter HA node communication.
Concept tested: vCenter HA network latency requirements between nodes
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-4CF8A2A2-0B5E-4D0B-B4F3-5F52C9E947D2.html
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